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When did GM go metric?

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Old Jan 11, 2005 | 07:08 AM
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Default When did GM go metric?

So the other day I was reasearching the specs on this '97 454 I was thinking about buying and I came across something odd--GM rates all their engines in metric now! Instead of being 454ci it was 7800-something cc and all the bore and stroke measurements were in mm instead of in. What has happened in the world that a domestic manufacturer would use non-domestic measurements?
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Old Jan 11, 2005 | 07:16 AM
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Default Re: When did GM go metric?

Originally posted by Frank
So the other day I was reasearching the specs on this '97 454 I was thinking about buying and I came across something odd--GM rates all their engines in metric now! Instead of being 454ci it was 7800-something cc and all the bore and stroke measurements were in mm instead of in. What has happened in the world that a domestic manufacturer would use non-domestic measurements?
well they've been refering to motors in litres for 40+ years now

I still hate it when they talk about domestic motors in metric cc's

makes me think I'm looking at a crotch rocket or a briggs and straton motor
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Old Jan 11, 2005 | 07:27 AM
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Default Re: Re: When did GM go metric?

Originally posted by myltwon
well they've been refering to motors in litres for 40+ years now

I still hate it when they talk about domestic motors in metric cc's

makes me think I'm looking at a crotch rocket or a briggs and straton motor
Liters I can almost handle, but seeing the 454 all done in cc's and mm's was really disheartening. The worst part is that it had all of the American measurement in parenthesis like it was only somewhat important. It's a fucking 454! That sounds mean. 7800cc sounds wrong.
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Old Jan 11, 2005 | 07:31 AM
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7800cc's sounds like a killer ass lawnmower
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Old Jan 11, 2005 | 07:41 AM
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I think its been that way since the mid 90s. We were supposed to switch to the metric system and never did. Since 90% of the car is made from overseas parts, its nothing new I think it started with the Vortec motors.
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Old Jan 11, 2005 | 07:43 AM
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Originally posted by Country Boy
I think its been that way since the mid 90s. We were supposed to switch to the metric system and never did. Since 90% of the car is made from overseas parts, its nothing new I think it started with the Vortec motors.
Figures. So how's that 5700cc LS1 treatin' ya? My 1972 5700cc motor still runs strong and the 1340cc engine in my Harley runs well. That's it, I'm converting everything I own to metric now. Maybe I should convert the Honda to SAE though? I have a 45ci Honda Magna now.
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Old Jan 11, 2005 | 07:45 AM
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SInce they started breeding with Toyotas???
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Old Jan 11, 2005 | 07:45 AM
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metric = teh suck

I love my dinosaur motor and caveman measurements
454, 455, 502, 350 sounds alot more bad ass
cc's make everything sound sound professional

Standard makes me think of crude, brute force, when talking about motors
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Old Jan 11, 2005 | 10:05 AM
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welcome to 1978! and Harleys in their own catelog measure motors in cc
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Old Jan 11, 2005 | 10:31 AM
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2981 CC checking in
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